US5742635A - Enhanced time of arrival method - Google Patents
Enhanced time of arrival method Download PDFInfo
- Publication number
- US5742635A US5742635A US08/238,326 US23832694A US5742635A US 5742635 A US5742635 A US 5742635A US 23832694 A US23832694 A US 23832694A US 5742635 A US5742635 A US 5742635A
- Authority
- US
- United States
- Prior art keywords
- time
- leading edge
- signal
- correlation
- arrival
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/14—Systems for determining direction or deviation from predetermined direction
- G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
- G01S3/50—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems the waves arriving at the antennas being pulse modulated and the time difference of their arrival being measured
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/04—Details
- G01S3/043—Receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Quality & Reliability (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
Description
Claims (41)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/238,326 US5742635A (en) | 1994-05-05 | 1994-05-05 | Enhanced time of arrival method |
US08/470,768 US5764686A (en) | 1994-05-05 | 1995-06-06 | Enhanced time of arrival method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/238,326 US5742635A (en) | 1994-05-05 | 1994-05-05 | Enhanced time of arrival method |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/470,768 Continuation-In-Part US5764686A (en) | 1994-05-05 | 1995-06-06 | Enhanced time of arrival method |
Publications (1)
Publication Number | Publication Date |
---|---|
US5742635A true US5742635A (en) | 1998-04-21 |
Family
ID=22897419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/238,326 Expired - Lifetime US5742635A (en) | 1994-05-05 | 1994-05-05 | Enhanced time of arrival method |
Country Status (1)
Country | Link |
---|---|
US (1) | US5742635A (en) |
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5920287A (en) * | 1997-01-21 | 1999-07-06 | Widata Corporation | Radio location system for precisely tracking objects by RF transceiver tags which randomly and repetitively emit wideband identification signals |
US6002708A (en) * | 1994-07-22 | 1999-12-14 | Aether Wire & Location, Inc. | Spread spectrum localizers |
WO2000048016A1 (en) * | 1999-02-12 | 2000-08-17 | Wherenet, Inc. | Wireless call tag based material replenishment system |
WO2000060769A1 (en) * | 1999-04-02 | 2000-10-12 | Qualcomm Incorporated | System and method for correlating traffic channel signal measurements in a communications system |
US6175811B1 (en) | 1997-12-04 | 2001-01-16 | Lucent Technologies Inc. | Method for frequency environment modeling and characterization |
US6259894B1 (en) * | 1997-12-04 | 2001-07-10 | Lucent Technologies Inc. | Method for improved line-of-sight signal detection using RF model parameters |
US6272350B1 (en) | 1997-12-04 | 2001-08-07 | Lucent Technologies Inc. | Method for improved line of sight signal detection using time/frequency analysis |
US6317082B1 (en) | 1999-02-12 | 2001-11-13 | Wherenet Corp | Wireless call tag based material replenishment system |
US6370184B1 (en) * | 1998-06-12 | 2002-04-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Correlator receiver |
US6414634B1 (en) | 1997-12-04 | 2002-07-02 | Lucent Technologies Inc. | Detecting the geographical location of wireless units |
WO2002084969A1 (en) * | 2001-04-16 | 2002-10-24 | Time Domain Corporation | System and method for positioning pulses in time using a code that provides spectral shaping |
AU769028B2 (en) * | 1999-04-02 | 2004-01-15 | Qualcomm Incorporated | System and method for correlating traffic channel signal measurements in a communications system |
US6683568B1 (en) * | 1999-05-14 | 2004-01-27 | Auckland Uniservices Limited | Position estimation services |
US6683919B1 (en) | 1999-06-16 | 2004-01-27 | National Semiconductor Corporation | Method and apparatus for noise bandwidth reduction in wireless communication signal reception |
US6734824B2 (en) | 2002-08-06 | 2004-05-11 | Lockheed Martin Corporation | System and method for locating emitters |
US6750807B1 (en) | 2003-06-11 | 2004-06-15 | Honeywell International Inc. | Radar altimeter with forward obstacle avoidance capabilities |
WO2004086078A1 (en) * | 2003-03-28 | 2004-10-07 | Commonwealth Scientific And Industrial Research Organisation | A device and method for determining an epoch using a de-spread spread-spectrum signal |
US20040208238A1 (en) * | 2002-06-25 | 2004-10-21 | Thomas John K. | Systems and methods for location estimation in spread spectrum communication systems |
US20060165044A1 (en) * | 2004-12-03 | 2006-07-27 | Advanced Metering Data Systems, L.L.C. | Method, system, apparatus, and computer program product for communications relay |
AU785280B2 (en) * | 2000-11-14 | 2006-12-21 | Extreme Networks, Inc. | Methods and apparatus for identifying asset location in communication networks |
US20070018891A1 (en) * | 2005-06-30 | 2007-01-25 | Golden Stuart A | Time of arrival estimation mechanism |
US20070184783A1 (en) * | 2003-11-29 | 2007-08-09 | Koninklijke Philips Electronics N.V. | Positioning method and apparatus |
US7453961B1 (en) | 2005-01-11 | 2008-11-18 | Itt Manufacturing Enterprises, Inc. | Methods and apparatus for detection of signal timing |
US20100232478A1 (en) * | 2009-03-10 | 2010-09-16 | Denso Corporation | Receiver for spread spectrum communication |
US20100295731A1 (en) * | 2007-01-11 | 2010-11-25 | Chia-Chin Chong | Method for optimum bandwidth selection of time-of-arrival estimators |
US20100304708A1 (en) * | 2009-05-29 | 2010-12-02 | Itt Manufacturing Enterprises, Inc. | Methods and Apparatus for Accurately Determining Signal Time of Arrival |
US8385964B2 (en) | 2005-04-04 | 2013-02-26 | Xone, Inc. | Methods and apparatuses for geospatial-based sharing of information by multiple devices |
US11374666B2 (en) * | 2018-06-08 | 2022-06-28 | Nokia Technologies Oy | Noise floor estimation for signal detection |
CN114740433A (en) * | 2022-04-27 | 2022-07-12 | 电子科技大学 | Time synchronization method based on compressed sensing under influence of multipath effect |
Citations (16)
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US3969725A (en) * | 1974-06-12 | 1976-07-13 | The United States Of America As Represented By The Secretary Of Transportation | Distance measuring equipment |
US4166275A (en) * | 1977-08-18 | 1979-08-28 | Digital Marine Electronics Corporation | Loran receiver system |
US4357610A (en) * | 1980-09-29 | 1982-11-02 | Sperry Corporation | Waveform encoded altitude sensor |
US4455556A (en) * | 1980-05-19 | 1984-06-19 | Nippon Electric Co., Ltd. | Distance measuring equipment |
US4520445A (en) * | 1981-03-30 | 1985-05-28 | E-Systems, Inc. | Method of determining the position and velocity of a vehicle |
US4558418A (en) * | 1981-03-30 | 1985-12-10 | E-Systems, Inc. | Leading edge estimator for navigation system |
US4644560A (en) * | 1982-08-13 | 1987-02-17 | Hazeltine Corporation | Intranetwork code division multiple access communication system |
US4758839A (en) * | 1987-07-22 | 1988-07-19 | Mcdonnell Douglas Corporation | Terrain profile radar system |
US4972441A (en) * | 1985-10-07 | 1990-11-20 | Honeywell, Inc. | Enhanced pulse time-of-arrival detector |
US4972431A (en) * | 1989-09-25 | 1990-11-20 | Magnavox Government And Industrial Electronics Company | P-code-aided global positioning system receiver |
US5017930A (en) * | 1990-01-25 | 1991-05-21 | John R. Stoltz | Precision landing system |
US5093841A (en) * | 1990-01-30 | 1992-03-03 | Nynex Corporation | Clock acquisition in a spread spectrum system |
US5119104A (en) * | 1990-05-04 | 1992-06-02 | Heller Alan C | Location system adapted for use in multipath environments |
US5148452A (en) * | 1990-12-31 | 1992-09-15 | Motorola, Inc. | Global positioning system digital receiver |
US5179573A (en) * | 1992-02-13 | 1993-01-12 | Gec-Marconi Electronic Systems Corp. | Amplitude measurement of received pseudonoise sequence using digital correlation |
US5266953A (en) * | 1991-08-01 | 1993-11-30 | Allied-Signal Inc. | Adaptive fixed-threshold pulse time-of-arrival detection apparatus for precision distance measuring equipment applications |
-
1994
- 1994-05-05 US US08/238,326 patent/US5742635A/en not_active Expired - Lifetime
Patent Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3969725A (en) * | 1974-06-12 | 1976-07-13 | The United States Of America As Represented By The Secretary Of Transportation | Distance measuring equipment |
US4166275A (en) * | 1977-08-18 | 1979-08-28 | Digital Marine Electronics Corporation | Loran receiver system |
US4455556A (en) * | 1980-05-19 | 1984-06-19 | Nippon Electric Co., Ltd. | Distance measuring equipment |
US4357610A (en) * | 1980-09-29 | 1982-11-02 | Sperry Corporation | Waveform encoded altitude sensor |
US4520445A (en) * | 1981-03-30 | 1985-05-28 | E-Systems, Inc. | Method of determining the position and velocity of a vehicle |
US4558418A (en) * | 1981-03-30 | 1985-12-10 | E-Systems, Inc. | Leading edge estimator for navigation system |
US4644560A (en) * | 1982-08-13 | 1987-02-17 | Hazeltine Corporation | Intranetwork code division multiple access communication system |
US4972441A (en) * | 1985-10-07 | 1990-11-20 | Honeywell, Inc. | Enhanced pulse time-of-arrival detector |
US4758839A (en) * | 1987-07-22 | 1988-07-19 | Mcdonnell Douglas Corporation | Terrain profile radar system |
US4972431A (en) * | 1989-09-25 | 1990-11-20 | Magnavox Government And Industrial Electronics Company | P-code-aided global positioning system receiver |
US5017930A (en) * | 1990-01-25 | 1991-05-21 | John R. Stoltz | Precision landing system |
US5093841A (en) * | 1990-01-30 | 1992-03-03 | Nynex Corporation | Clock acquisition in a spread spectrum system |
US5119104A (en) * | 1990-05-04 | 1992-06-02 | Heller Alan C | Location system adapted for use in multipath environments |
US5148452A (en) * | 1990-12-31 | 1992-09-15 | Motorola, Inc. | Global positioning system digital receiver |
US5266953A (en) * | 1991-08-01 | 1993-11-30 | Allied-Signal Inc. | Adaptive fixed-threshold pulse time-of-arrival detection apparatus for precision distance measuring equipment applications |
US5179573A (en) * | 1992-02-13 | 1993-01-12 | Gec-Marconi Electronic Systems Corp. | Amplitude measurement of received pseudonoise sequence using digital correlation |
Non-Patent Citations (2)
Title |
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Enge, Per K., Bandwidth Selection for Urban Radionavigation System (Addendum), Worcester Polytechnic Institution, Jul. 29, 1988. * |
Enge, Per K., Bandwidth Selection for Urban Radionavigation Systems Worcester Polytechnic Institute, Mar. 25, 1988. * |
Cited By (72)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6002708A (en) * | 1994-07-22 | 1999-12-14 | Aether Wire & Location, Inc. | Spread spectrum localizers |
US5920287A (en) * | 1997-01-21 | 1999-07-06 | Widata Corporation | Radio location system for precisely tracking objects by RF transceiver tags which randomly and repetitively emit wideband identification signals |
US6175811B1 (en) | 1997-12-04 | 2001-01-16 | Lucent Technologies Inc. | Method for frequency environment modeling and characterization |
US6259894B1 (en) * | 1997-12-04 | 2001-07-10 | Lucent Technologies Inc. | Method for improved line-of-sight signal detection using RF model parameters |
US6272350B1 (en) | 1997-12-04 | 2001-08-07 | Lucent Technologies Inc. | Method for improved line of sight signal detection using time/frequency analysis |
US6414634B1 (en) | 1997-12-04 | 2002-07-02 | Lucent Technologies Inc. | Detecting the geographical location of wireless units |
US6370184B1 (en) * | 1998-06-12 | 2002-04-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Correlator receiver |
WO2000048016A1 (en) * | 1999-02-12 | 2000-08-17 | Wherenet, Inc. | Wireless call tag based material replenishment system |
US6317082B1 (en) | 1999-02-12 | 2001-11-13 | Wherenet Corp | Wireless call tag based material replenishment system |
WO2000060769A1 (en) * | 1999-04-02 | 2000-10-12 | Qualcomm Incorporated | System and method for correlating traffic channel signal measurements in a communications system |
CN100373815C (en) * | 1999-04-02 | 2008-03-05 | 高通股份有限公司 | System and method for correlating traffic channel signal measurements in communications system |
AU769028B2 (en) * | 1999-04-02 | 2004-01-15 | Qualcomm Incorporated | System and method for correlating traffic channel signal measurements in a communications system |
US6683568B1 (en) * | 1999-05-14 | 2004-01-27 | Auckland Uniservices Limited | Position estimation services |
US6683919B1 (en) | 1999-06-16 | 2004-01-27 | National Semiconductor Corporation | Method and apparatus for noise bandwidth reduction in wireless communication signal reception |
AU785280B2 (en) * | 2000-11-14 | 2006-12-21 | Extreme Networks, Inc. | Methods and apparatus for identifying asset location in communication networks |
WO2002084969A1 (en) * | 2001-04-16 | 2002-10-24 | Time Domain Corporation | System and method for positioning pulses in time using a code that provides spectral shaping |
US20040208238A1 (en) * | 2002-06-25 | 2004-10-21 | Thomas John K. | Systems and methods for location estimation in spread spectrum communication systems |
US6734824B2 (en) | 2002-08-06 | 2004-05-11 | Lockheed Martin Corporation | System and method for locating emitters |
WO2004086078A1 (en) * | 2003-03-28 | 2004-10-07 | Commonwealth Scientific And Industrial Research Organisation | A device and method for determining an epoch using a de-spread spread-spectrum signal |
US6750807B1 (en) | 2003-06-11 | 2004-06-15 | Honeywell International Inc. | Radar altimeter with forward obstacle avoidance capabilities |
US20070184783A1 (en) * | 2003-11-29 | 2007-08-09 | Koninklijke Philips Electronics N.V. | Positioning method and apparatus |
US8626183B2 (en) * | 2003-11-29 | 2014-01-07 | Koninklijke Philips N.V. | Positioning method and apparatus |
US20060165044A1 (en) * | 2004-12-03 | 2006-07-27 | Advanced Metering Data Systems, L.L.C. | Method, system, apparatus, and computer program product for communications relay |
US7706745B2 (en) | 2004-12-03 | 2010-04-27 | M&Fc Holding, Llc | Method, system, apparatus, and computer program product for communications relay |
US7453961B1 (en) | 2005-01-11 | 2008-11-18 | Itt Manufacturing Enterprises, Inc. | Methods and apparatus for detection of signal timing |
US8798647B1 (en) | 2005-04-04 | 2014-08-05 | X One, Inc. | Tracking proximity of services provider to services consumer |
US9749790B1 (en) | 2005-04-04 | 2017-08-29 | X One, Inc. | Rendez vous management using mobile phones or other mobile devices |
US11778415B2 (en) | 2005-04-04 | 2023-10-03 | Xone, Inc. | Location sharing application in association with services provision |
US11356799B2 (en) | 2005-04-04 | 2022-06-07 | X One, Inc. | Fleet location sharing application in association with services provision |
US10856099B2 (en) | 2005-04-04 | 2020-12-01 | X One, Inc. | Application-based two-way tracking and mapping function with selected individuals |
US8385964B2 (en) | 2005-04-04 | 2013-02-26 | Xone, Inc. | Methods and apparatuses for geospatial-based sharing of information by multiple devices |
US8538458B2 (en) | 2005-04-04 | 2013-09-17 | X One, Inc. | Location sharing and tracking using mobile phones or other wireless devices |
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US8798645B2 (en) | 2005-04-04 | 2014-08-05 | X One, Inc. | Methods and systems for sharing position data and tracing paths between mobile-device users |
US8831635B2 (en) | 2005-04-04 | 2014-09-09 | X One, Inc. | Methods and apparatuses for transmission of an alert to multiple devices |
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US9167558B2 (en) | 2005-04-04 | 2015-10-20 | X One, Inc. | Methods and systems for sharing position data between subscribers involving multiple wireless providers |
US9185522B1 (en) | 2005-04-04 | 2015-11-10 | X One, Inc. | Apparatus and method to transmit content to a cellular wireless device based on proximity to other wireless devices |
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US9615204B1 (en) | 2005-04-04 | 2017-04-04 | X One, Inc. | Techniques for communication within closed groups of mobile devices |
US9654921B1 (en) | 2005-04-04 | 2017-05-16 | X One, Inc. | Techniques for sharing position data between first and second devices |
US9736618B1 (en) | 2005-04-04 | 2017-08-15 | X One, Inc. | Techniques for sharing relative position between mobile devices |
US10750309B2 (en) | 2005-04-04 | 2020-08-18 | X One, Inc. | Ad hoc location sharing group establishment for wireless devices with designated meeting point |
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US20070018891A1 (en) * | 2005-06-30 | 2007-01-25 | Golden Stuart A | Time of arrival estimation mechanism |
US7271764B2 (en) * | 2005-06-30 | 2007-09-18 | Intel Corporation | Time of arrival estimation mechanism |
US20100295731A1 (en) * | 2007-01-11 | 2010-11-25 | Chia-Chin Chong | Method for optimum bandwidth selection of time-of-arrival estimators |
US20100232478A1 (en) * | 2009-03-10 | 2010-09-16 | Denso Corporation | Receiver for spread spectrum communication |
US8041336B2 (en) | 2009-05-29 | 2011-10-18 | Itt Manufacturing Enterprises, Inc. | Methods and apparatus for accurately determining signal time of arrival |
US20100304708A1 (en) * | 2009-05-29 | 2010-12-02 | Itt Manufacturing Enterprises, Inc. | Methods and Apparatus for Accurately Determining Signal Time of Arrival |
US11374666B2 (en) * | 2018-06-08 | 2022-06-28 | Nokia Technologies Oy | Noise floor estimation for signal detection |
CN114740433A (en) * | 2022-04-27 | 2022-07-12 | 电子科技大学 | Time synchronization method based on compressed sensing under influence of multipath effect |
CN114740433B (en) * | 2022-04-27 | 2023-04-25 | 电子科技大学 | Time synchronization method based on compressed sensing under influence of multipath effect |
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